UNLINKPREV
inon->id_state |= UNLINKPREV;
if ((inodedep->id_state & UNLINKPREV) == 0)
inodedep->id_state |= UNLINKPREV;
idn->id_state &= ~UNLINKPREV;
(inodedep->id_state & UNLINKPREV) != UNLINKPREV) {
#define UNLINKLINKS (UNLINKNEXT | UNLINKPREV)